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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11889757 B1

PDFFull Text
Date of Patent:
Jan. 30, 2024

Filed:

Jul. 26, 2019

Organic light emitting diode and organic light emitting device having the same

Applicant:

Lg Display Co., Ltd., Seoul, KR;

Inventors:

Bo-Min Seo, Paju-si, KR;

Dae-Wi Yoon, Paju-si, KR;

Jun-Yun Kim, Paju-si, KR;

Chun-Ki Kim, Paju-si, KR;

Mi-Sang Yoo, Paju-si, KR;

Assignee:

LG Display Co., Ltd., Seoul, KR;

Attorney:

Fenwick & West LLP

Primary Examiner:

Jenna N Chandhok

Int. Cl.
CPC ...
H10K 85/60 (2023.01); H10K 85/40 (2023.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 50/18 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 101/10 (2023.01); H10K 101/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); H10K 85/40 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 50/18 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 2101/10 (2023.02); H10K 2101/27 (2023.02);
Abstract

An organic light emitting diode comprises an emitting material layer implementing a delayed fluorescence and another emitting material layer disposed adjacently to the emitting material layer and implementing fluorescence or phosphorescence and an organic light emitting device including the diode. As exciton generated in the plural emitting material layer drops to a ground state through the luminous materials each of which has a controlled energy level, it is possible to implement excellent luminous efficiency derived from a delayed fluorescent material and improved color purity derived from a fluorescent or phosphorescent material having narrow FWHM.

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